JPH022104Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a vibration isolating support, and more particularly to a vibration isolating support used to elastically support an automobile exhaust pipe or the like.

Prior Art Conventionally, when supporting a supported body by suspending it from a support that is a source of vibration, a rubber elastic material has been used between them in order to prevent vibrations from the support from being transmitted to the supported body. A structure in which a vibration isolating support made of a body is interposed is employed, and for example, in an automobile, such a structure is employed when the exhaust pipe is suspended from and supported by the vehicle body.

By the way, conventional vibration-proof supports are as follows:
It is made of a thick-walled rubber elastic molded product, and has two fastening holes provided at the top and bottom, respectively. The mounting members on the side of the supported object are respectively inserted and engaged, and the supported object such as an exhaust pipe is suspended and supported. The support does not have a mechanism to restrict displacement in the vertical tensile direction, so if excessive loads, including fluctuating loads, are applied,
Supports (rubber elastic bodies) due to significant deformation, cutting, or exposure to high temperature conditions.
There has been a problem in that supported bodies such as exhaust pipes may fall off due to breakage due to deterioration or further damage due to collision with obstacles.

For this reason, the applicant of the present application first proposed the
33939, Utility Model Publication No. 53-33940, etc., an auxiliary load sharing section is concentrically connected to the periphery or side of a ring-shaped main elastic section by integral molding, and a steel plate is attached at the center of the auxiliary load sharing section. By burying the stranded wires, in the event that the main elastic part is cut or destroyed, a supported body such as an exhaust pipe is supported by the elastic body in the auxiliary load sharing part, and the supported body is We proposed a structure that prevents it from falling off.

Problems: However, in the case of a support structure equipped with such an auxiliary load sharing section, although it is sufficient as a mechanism for regulating displacement in the vertical tensile direction,
Since the auxiliary load sharing section in which the steel strands are buried is integrally connected along the ring shape of the main elastic section, both of them affect the spring constant of the main elastic section, and usually, There has been a problem in that the vibration-proofing effect of a supported body such as an exhaust pipe, which is vibration-proofly supported by the main elastic portion, is reduced in a normal use area.

Furthermore, Japanese Utility Model Publication No. 53-16739 discloses an exhaust pipe support device in which a ring-shaped connecting plate is fixed to the outer periphery of a rubber elastic body having two fastening holes (supporting parts). In this method, spaces are provided in the rubber elastic body portions located above and below the two fixing holes to adjust the spring constant, but most of the outer periphery of the rubber elastic body Since the rubber elastic body is fixed to the connecting plate, the vibration-proofing effect of the rubber elastic body in the normal use area is not sufficient, and if the space is enlarged in order to reduce the spring constant, When a lateral force is applied to the connection between the rubber elastic body and the connection plate,
A tearing force is added to this, resulting in the inherent problem of cracks and cracks.

Solution The present invention was developed to solve this problem, and its feature is that it has two fastening holes spaced apart from each other at the top and bottom. Moreover, it is made of a thick rubber elastic body having a vertically elongated elliptical shape and has a substantially H-shaped space located between the fixing holes, and the upper part of the elliptical part has a substantially H-shaped space provided therebetween. A strong ring is positioned around the outer periphery of the object having the protrusion that extends further, so that the rubber elastic body is eccentrically upward, and a ring with high strength is placed on both sides and the lower outer periphery of the rubber elastic body. The protrusion of the rubber elastic body and the ring are integrally connected while substantially forming a predetermined gap between the rubber elastic body and the ring, so that the rubber elastic body and the ring can be connected only by the protrusion. The reason is that a substantial connection is made between the two.

That is, according to the present invention, a predetermined gap is substantially formed between both sides and the lower outer circumference of the rubber elastic body and the ring provided around the outer circumference of the rubber elastic body. In addition, the rubber elastic body can be freely deformed within such a gap, so its spring constant is not affected, and the rubber elastic body Although deformation up to the elastic ring is allowed, further deformation is prevented. Even if the rubber elastic body is damaged and the mounting member on the supported body side, which is fitted into the attachment hole of the rubber elastic body, falls downward, it will be caught by the outer ring. Therefore, a good fail-safe function can be effectively exhibited here.

In addition, in this invention, the ring provided around the outside of the rubber elastic body can restrict large deformation of the rubber elastic body in the tensile direction, and when the supported body suspended from the rubber elastic body falls,
The ring used in the present invention is not limited to metal, and may be made of plastic or canvas as long as it has sufficient strength to support it. Preferably, it is made of a rigid material such as metal and has an elliptical shape, so that deformation of the rubber elastic body in the lateral direction (horizontal direction) can be suitably restricted.

Further, according to the present invention, the rubber elastic body is positioned eccentrically upward with respect to the ring, and furthermore, the rubber elastic body has an H-shaped shape located between the two upper and lower engagement holes. There is a space, which softens the spring constant of the rubber elastic body as a whole.

Furthermore, in the present invention, the rubber elastic body has an elongated elongated part in the vertical direction and a protrusion further extending upward from the elongated part, and the ring is arranged in the protrusion. However, a structure in which the ring is substantially connected to the rubber elastic body is adopted, thereby improving the durability of the connection portion between the rubber elastic body and the ring.

Furthermore, the vibration isolation support according to the present invention is generally manufactured in a structure in which a rubber elastic body and a ring are integrally connected by integral vulcanization molding, and the surface of the ring is The rubber elastic body is coated with a rubber elastic material similar to the material constituting the rubber elastic body. Also,
In this case, in a structure in which the lower end portion of the rubber elastic body and the covering of the lower end of the ring are connected by a thin section of the rubber elastic body that is easy to break and allows deformation of the rubber elastic body, the desired prevention is achieved. The swing support body is integrally vulcanized and molded.

Embodiments Hereinafter, in order to clarify the present invention more specifically, several embodiments of the present invention will be described in detail based on the drawings.

First, in FIGS. 1 and 2 showing reference examples useful for understanding the vibration isolating support according to the present invention, reference numeral 2 denotes a rubber block that is a thick rubber elastic body, and the block as a whole is vertically oriented. It has an elongated oval shape. Attachment holes 4 and 6 (total of 2) are provided in the upper and lower parts of the rubber block 2, respectively, and an approximately H-shaped space 8 is located between the attachment holes 4 and 6. It is formed. In other words, a substantially H-shaped cutout hole 8 is formed between the upper and lower engagement holes 4 and 6 of the rubber block 2. The rubber block 2 portion around the upper locking hole 4 and the rubber block 2 around the lower locking hole 6 are connected at narrow connecting portions 10, 10 on both sides.

Also, around the outside of the rubber block 2,
A band-shaped ring 12 having a predetermined width and made of a metal material such as an oval steel material is eccentrically positioned. That is, the rubber block 2 is connected to the ring 12.
is positioned eccentrically upward relative to the
A ring 12 is fixed (adhered) to the upper peripheral surface of the rubber block 2 and is integrally connected thereto. Due to such an eccentric arrangement of the inner rubber block 2, a crescent-shaped or U-shaped absorption gap 14 of a predetermined size is formed between the ring 12 and the outer peripheral surface of both sides and the lower part of the rubber block 2. ing.

As shown in FIG. 2, the vibration isolating support having such a structure is supported by fitting and engaging mounting hangers 16 and 18 as mounting members into the mounting holes 4 and 6, respectively. The target object is suspended from the body and supported.
For example, in the case of an automobile exhaust pipe, the mounting hanger 16 that is engaged with the upper engagement hole 4 is attached to the vehicle body, while the attachment hanger 18 that is engaged with the lower engagement hole 6 is conventionally attached to the vehicle body. The exhaust pipe is attached in the same manner as above, and the exhaust pipe is suspended and supported from the vehicle body.

Therefore, in the vibration isolating support having such a structure, since a predetermined absorption gap 14 is formed between the rubber block 2 and the ring 12, deformation of the rubber block 2 in the vertical tensile direction is restricted. Therefore, when the normal amplitude is small, the rubber block 2 and the ring 12 do not come into contact, and only the spring constant of the rubber block 2 acts to maintain the good vibration-proofing effect inherent to the rubber block 2. It makes them perform. Furthermore, if the upper and lower locking holes 4 and 6 are subjected to a large displacement in the direction in which they are separated from each other, in other words in the tensile direction, the rubber block 2 will not be able to hold its spring until the crescent-shaped absorption gap 14 disappears. It undergoes free deformation according to the constant, but when it receives a vibrating external force (large displacement) that exceeds the point where the absorption gap disappears, the rubber block 2 and the ring 12 come into contact, preventing further deformation of the rubber block 2. (large displacement) is regulated by the ring 12.

Furthermore, in the unlikely event that such a vibration-proof support is damaged or deteriorated by heat etc., it may break, break, or
Even if the ring 12 is broken, the presence of the ring 12 reliably fulfills the so-called fail-safe function of preventing the supported body suspended and supported by the vibration isolating support from falling. In particular, when an exhaust pipe is selected as the supported object, since it is generally attached to the underside of the vehicle body, stones and falling objects from the road may hit the rubber block 2 of the anti-vibration support. In such cases, the ring 12 effectively prevents the exhaust pipe from falling.

In the above-mentioned reference example, the ring 12 is made of a rigid metal, and spaces are formed between the rubber block 2 and the ring 12 on both sides of the rubber block 2. The rubber block 2 is allowed to deform freely even in response to vibration input in the lateral direction (horizontal direction in FIG. 1), and in the case of large deformation, the large lateral displacement can be effectively restricted. ing. Furthermore, the H-shaped space 8 provided in the rubber block 2 softens the spring constant of the rubber block 2 as a whole, and also
In other words, the stopper function can be effectively performed in the direction in which the locking holes 4 and 6 approach each other.

Further, FIGS. 3 and 4 show other reference examples for understanding the vibration isolating support according to the present invention, but the shape of the ring 12 and the shape of the ring 12,
A significant difference is that a rubber coating 20 is integrally provided around the ring 12. That is, the metal ring 12 in this reference example has a linear shape with a rectangular cross section, and the entire circumferential surface of the ring is covered with the rubber coating 20 and is integrally connected to the rubber block 2. be. Such a vibration isolating support is a rubber block 2.
During vulcanization molding, the ring 12 is placed in the mold, and at the same time as the rubber block 2 is molded,
The rubber material constituting the rubber block 2 is a ring 1.
It can be effectively manufactured by distributing it around 2. By forming the rubber coating 20 on the surface of the ring 12 in this way, it is possible to protect the rubber block 2 that comes into contact with it in the event of large deformation, and also to provide a protection or cushioning function in the event of a collision with another object. You can force it.

By the way, in the first embodiment of the vibration isolating support according to the present invention, as shown in FIGS. 5, 6 and 7, unlike the above two reference examples, the rubber block 2 is The connection between the ring 12 and the ring 12 has been devised.

That is, the rubber block 2 in the vibration isolating support of this embodiment has an oblong portion 2 that is elongated in the vertical direction.
a, and a protrusion 2b that extends upward by a predetermined length from the oval shaped portion 2a, and the ring 12 is embedded and integrated so as to penetrate inside the protrusion 2b. The ring 12 is connected to the rubber block 2 only at the protruding portion 2b. This anti-vibration support is also effectively produced by the same integral vulcanization molding method as in the previous example. Since the rubber block 2 and the ring 12 are connected with the minimum necessary length at the protrusion 2b, the rubber block 2
The receiving gap 14 between the rubber block 2 and the ring 12 extends well above the rubber block 2.

Therefore, in such a structure, the elliptical portion (main body portion) 2a of the rubber block 2 is suspended from the ring 12 at its protruding portion 2b, as in the above two reference examples. , the connecting portion with the ring 12 does not extend long in the circumferential direction of the ring, and therefore, the application of tensile force (tearing force) to the connecting portion due to the lateral movement of the rubber block 2 is effectively suppressed. As a result, problems such as cracks and cracks can be effectively prevented, and its durability can be improved.

Furthermore, the second embodiment shown in FIGS. 8, 9, and 10 is based on the same technical idea as the first embodiment, but
This structure is easier to manufacture than that of the first embodiment.

That is, in this embodiment, as in the first embodiment, a ring 12 is made to exist in the mold during vulcanization molding of the rubber block 2, and the rubber material constituting the rubber block 2 is molded into the ring 12. The rubber coating 20 is formed on the entire circumference of the ring 12, and a thin layer is provided between the lower end of the rubber block 2 and the rubber coating 20 on the lower end of the ring 12. A connecting portion 22 is provided, through which the rubber block 2 is connected.
The side rubber material can wrap around the lower end portion of the ring 12.

In other words, the ring 12 has its upper and lower parts connected to the rubber block 2 via the protrusion 2b and the thin connection part 22, and the rubber material of the rubber block 2 is connected to the ring 12 from the upper and lower parts. A rubber coating 2 is applied to the ring 12 from a point where it can be wrapped around the ring 12.
This allows for more complete and easier coverage of 0. In addition, in order to form such a thin connection part 22, it is necessary to create a groove in the upper or lower part of the vulcanization mold corresponding to the connection part 22. Due to the presence of the vulcanized product, the vulcanized product will adhere to either the upper or lower side of the mold, making it easier to take out the vulcanized product. be.

Note that the thin connecting portion 22 connecting the lower end of the rubber block 2 and the rubber coating 20 on the lower end of the ring 12 is easily broken, and also prevents deformation of the rubber block 2 in the vertical and horizontal directions. It is acceptable, and in actual use, it can be applied by separating the connection part 22, or it can be applied to a supported body such as an automobile exhaust pipe without separating the connection part 22. It is applied to anti-vibration support for vehicles, etc.

Although several embodiments of the present invention have been shown above, the present invention is by no means limited to these illustrative embodiments, and various changes, modifications, and changes may be made without departing from the spirit of the present invention. It goes without saying that improvements can be made and the present invention includes such embodiments.

For example, the shape of the rubber block 2 and the shape of the ring 12 are preferably oval, but other shapes such as circular are also acceptable.

Effects of the invention As is clear from the above explanation, the present invention arranges rings around the outside of the rubber elastic body and connects them integrally at the upper part, while
A predetermined gap is formed between at least the lower outer periphery of the rubber elastic body and the ring, without reducing the vibration-proofing effect of the rubber elastic body in a normal use area. , effectively restricts large deformations in the vertical tensile direction, and even if the rubber elastic body is cut, broken, or destroyed due to deterioration or damage, the outer ring will support it. It is possible to effectively exert a so-called fail-safe function that prevents a supported object such as an exhaust pipe from falling.
Furthermore, since it is connected to the ring via the protrusion extending from the upper part of the rubber elastic body, it is possible to effectively suppress tensile force (tearing force) from acting on the connecting part due to lateral movement. This makes it possible to advantageously prevent problems such as cracks and cracks from occurring therein, and improve its durability, and this is where the great industrial significance of the present invention can be found.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing a reference example for understanding the vibration isolating support according to the present invention;
The figure is a - sectional view in FIG. 1. FIG. 3 is a partially cutaway front view showing another reference example for understanding the vibration isolating support according to the present invention, and FIG. 4 is a cross-sectional view taken in FIG. 3. 5 and 8 are partially cutaway front views showing different embodiments of the vibration isolating support according to the present invention, and FIGS. 6 and 9, and FIGS. 7 and 10 are respectively - Cross-sectional view and - in Figure and Figure 8
They are a sectional view and a plan view. 2...Rubber block, 2a...Oval shaped part,
2b... Protrusion, 4, 6... Attachment hole, 8... H-shaped space, 12... Ring, 14... Absorption gap, 1
6, 18...Mounting hanger, 20...Rubber coating, 22...Thin connection portion.

Claims (1)

[Claims for Utility Model Registration] (1) A vehicle having two locking holes spaced apart from each other at the top and bottom, and a roughly H-shaped space located between the locking holes. A state in which the rubber elastic body is eccentric upwards around the outer periphery of the thick rubber elastic body having an oval shape elongated in the vertical direction and having a protrusion further extending upward from the upper part of the oval part. A ring with high strength is positioned so that the rubber elastic body is A vibration-proof support device characterized in that the protrusion and the ring are integrally connected, so that the rubber elastic body and the ring are substantially connected only by the protrusion. (2) The anti-vibration support according to claim 1, wherein the ring is made of a rigid material and has an oval shape. (3) The rubber elastic body and the ring are integrally connected by integral vulcanization molding, and the ring is covered with a rubber elastic material similar to the material constituting the rubber elastic body. The anti-vibration support according to claim 1 or 2 of the utility model registration claim. (4) A utility model registration claim in which the lower end of the rubber elastic body and the covering of the lower end of the ring are connected by a thin section of the rubber elastic body that is easy to break and allows deformation of the rubber elastic body. The anti-vibration support described in scope 3.